Wheel-lift



W. L. WALTON.

WHEEL LEFT.

APPLICATION HLED DEC. 24, I913.

Patented May 18, 19 20.

2 SHEETS-SHEET l- 1 14. M24 mv g g I 3r v m w W. L. WALTON.

WHEE L LIFT. APPLICATION FILED DEC. 24, 1913.

1,340,537. Patented May 18, 1920.

2 SHEETS-SHEET 2.

k 12 6 ii. 53 13 (a 1 Wkly/E W "x A Y WILLIAML. WALTON, or BANTR'Y,NORTH DAKOTA.

WHEEL-LIFT:

Specification of Letters Patent.

Patented May 18, 1920.

Original application filed J'une 12, 1912, SeriaINo. 703,239. Dividedand this application filed December 1 24, 1913. Serial No. 808,620.

To all whom it may concern: I

Be it known that I, WILLIAM L. VVAL'roN, a citizen of the United StateofAmerica, and resident of Bantry, State of North Dakota, in the UnitedStates of America, have invented certain new and useful Improvements inWheel-Lifts, of which the following is the specification.

This invention relates to improvements in wheel lifts,-such for exampleas are used in motor plows and particularly to the wheel lift adapted tobe used in the plow which I have shown in my copending applicationSerial No. 703,239, filed June 12th, 1912. General objects of theinventon are to provide improved mechanism for bringingthe wheels to thesame level during the turning of the plow, or otherwise when the plowsare inoperative. Further objects are to en able the operation to becarried out at the same time as the operation of the plow lift mechanismand practically by the same mechanism. The invention consists of theimproved construction hereinafter described in detail in theaccompanying specification and drawings.

Figure l is a side elevation of the machine. I

Fig. 2 is a plan view thereof.

Fig. 3 is a side elevation of a portion of the mechanism.

Fig. 4; is a plan view.

Fig. 5 is a perspective view of the device for adjusting the position ofthe traction wheel. y

In the drawings like characters of reference indicate correspondingparts in each figure.

1 is the main frame. 2 and 2 are the traction wheels, the former beingjournaled to the subframe 3. 4 is a power plant and 5 transmission gearand 6 the counter shaft extending crosswise of the frame havingsprockets 7 thereon. 8 are sprockets on the traction wheel axles. 10 arechains connecting the sprockets 7 and 8. 11 isthe rear guiding wheelsuitably pivoted to the main frame. 12 is the crank shaft extendingcrosswise of the frame having bearings 13 thereon. 1 1 are boxessurrounding the crank shaft and connected to the beams 15 of the plows16.

The crank shaft is operated and controlled by suitable mechanism such asthat described in my application 703239. The

plows are lifted by suitable mechanism such for example, as that shownand described in my application Serial No. 808619, filed Dec. 24, 1913.l

The sub-frame 3 is in the form of a U shaped yoke having its endspivotally mounted on the counter-shaft 6 and being retained in positionby collars 17 on the counter-shaft. The counter-shaft itself issupported by suitable bearing boxes 46. This arrangement allows thelowering and raising of the rear end of the sub-frame 3 and tractionwheel 2 without disturbin the tightness of the driving chain 10. Gl uidepieces as are attached to the rear end of the sub-frame and are intendedto hold the sub frame in line between the main frame bars when theformer is raised and lowered within the main frame. 49 are brackets and50 are bell crank levers pivotally connected thereto. The rear ends ofthe bell crank levers 50 are provided with rollers 52 having flanges ontheir inner edges, and the bell cranks are offset at so that theoutsides of the rollers will pass between the main frame bars. Therollers 52 rests upon the sub-frame 3 near its rear end and when thesub-frame is in its most elevated position it rests firmly-against thebell cranks directly below the pivots of the brackets 19. Anadditionalcrank 5a is formed on the end of the crank shaft 12, thiscrank being set at approximately right angles to the plowlift crankthrow of the same. A plate 55 having a hollow boss 56 at its rear end isdesi ned to be pivotally secured to the crank eat. 58 are connectingbars having their rear ends secured at each side of the plate 55' andtheir forward ends pivotally connected to the upper ends 51 of the bellcrank levers.

' To provide forthe manual independent adjustment of the traction wheel2, racks 59 are provided having teeth 59- on one side of the inside.Each rack 59 is connected to the sub-frame 3, and is engaged by'a pinion59 fixedly mounted on the shaft supporting the traction wheel andadapted to be turned manually by suitable means such as the worm gear 59connected thereto, and the worm 59 which may be turned by a suitableshaft 59. It may be stated that this adjustment mechanism is by itselfwell known but its use on the sub-frame 3 with the power lift mechanismis new with the applicant. lVhen the end of the field is reached and theplows are to be thrown out by the lifting device, a half turn of thecrank shaft 12 will throw the crank 54; into rearward position, pullingthe top end of the bell cranks 51 backwardly as shown in the dottedlines in Fig. 8, thus throwing the rear end of the sub-frame 3downwardly, carrying the left traction wheel 2 down to the level of theright traction wheel, as in the movement of the raising and loweringdevice. hen the turn at the end of the field has been made, the otherhalf revolution will allow the sub-frame 3 to return to its normalposition'between the main frame bars.

It will be understood that the subframc 8 is only applied to the lefthand or land wheel 2, the right hand or furrow wheel rack bars arebolted solidly to the frame.

From the above description it will be seen that the advantages of theraising and lowering will be great.

. What I claim as my invention is:

1. In a traction device, a main frame, a sub-frame, a traction wheeljournaled in the sub-frame, a traction wheel journaled in the mainframe, a suitable engine mounted on the main frame, a transmission gearconnected thereto, a counter shaft connected to the transmission gearand having bearings on the main frame, suitable driving connectionsbetween the countershaft and the wheels, racks secured to the sub-frame,pinions on the axle of the traction wheel meshing with the racks, saidsub-frame being pivotally connected at its forward end to the countershaft, and means for lowering and raising the rear end of the sub-frame,as and for the purpose specified.

2. In a plow, a main frame, a sub-frame, a traction wheel journaled inthe sub-frame, a suitable engine mounted on the main frame, atransmission gear connected thereto, a counter shaft connected to thetransmission gear and having bearings on the main frame, a wheel racksecured to the sub-frame, a pinion on the axle of the traction wheelmeshing with the rack, said sub-frame being pivotally connected at itsforward end to the counter shaft, a crank shaft, an additional crankformed on the end of the crank shaft, a plate having a hollow boss onits rear end pivotally connected to the additional crank, a bracket onthe side bar of the main frame, a bell crank lever pivotally connectedthereto, the lower end of the bell crank having a roller mounted thereonwith flanges on its inner edge, said roller running on the sub-frameside bar, and a connecting bar adjustably connected at one end to theplate pivoted to the additional crank and at the other end to the upperend of the bell crank lever, as and for the purpose specified. 3. In aplow, a mainframe, a sub-frame, a traction wheel journaled to thesub-frame, a traction wheel journaled to the main frame, a suitableengine mounted on the, main frame, a transmission gearconnected thereto,a counter shaft connected to the transmission gear and having bearingson the main frame, suitable driving connections between the countershaftand the wheels, a rack secured to the sub-frame, a pinion on the axle ofthe traction wheel meshing with the rack, a crank shaft, said sub-framebeing pivotally connected at its forward end to the counter shaft, anadditional crank on the crank shaft, a plate having a hollow boss on itsrear end pivotally connected to. the crank, a bracket on the side bar ofthe main frame, a bell crank lever pivotally connected thereto, thelower end of the bell crank having a roller mounted thereon with aflange on its inner edge, said roller running on the sub-frame side bar,and a connecting bar adjustably connected at one end to the platepivoted to the crank and the other end to the upper end of the bellcrank lever, as and for the purpose specified.

4E. In a traction device, a frame, a traction wheel mounted therein, anindependently adjustable sub-frame, a traction wheel on the sub-frame,and power means for moving the sub-frame to bring the traction wheels tothe same level, and means for manually adjusting the position of thetraction wheel on the sub-frame.

5. In a traction device, a frame, a traction wheel mounted therein, anindependently adjustable sub-frame, a traction wheel on the sub-frame,and power means for'mov-' mg the sub-frame to bring the traction WILLIAML. WALTON. Witnesses i i H. M. VVALTON, NnLs MnLAAs.

